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n202jh(at)GMAIL.COM
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 Posted: Wed Oct 14, 2015 4:38 pm Post subject: Commander 500S oil pressure |
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Good Evening,
My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
Dgroves484(at)gmail.com (Dgroves484(at)gmail.com)
[url=tel:(954)%20240-1383](954) 240-1383[/url]
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com (N202JH(at)gmail.com)
(954) 240-1383
Sent from my iPad
[quote][b]
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n55bz(at)cox.net
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| Posted: Wed Oct 14, 2015 5:58 pm Post subject: Commander 500S oil pressure |
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I believe that there are springs with different rates available for the oil pressure regulator assembly. They are painted different colors- white, yellow and green, if I remember correctly. Washers are placed into the oil pressure regulator on top of the spring to set the minimum oil pressure and the different springs are used to set the max. The condition of the steel ball and the ball seat is critical- just a little surface rust on the ball or a minute scratch on the seat can result in very low oil pressure.
When changing any components of the oil pressure regulator be careful to remove all of the washers inside the spring housings before the initial start. I did not do this on one occasion and after replacing the ball and refacing the seat blew out the oil cooler about the time that the oil pressure needle reached the end of the scale. It was amazing how rapidly the oil pressure rose.
I believe that there are adjustable oil pressure regulators which do not use washers to adjust the pressure.
Kindest regards,
Bill
On Oct 14, 2015, at 7:36 PM, N202JH <n202jh(at)GMAIL.COM (n202jh(at)gmail.com)> wrote:
[quote]
Good Evening,
My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
Dgroves484(at)gmail.com (Dgroves484(at)gmail.com)
[url=tel:(954)%20240-1383](954) 240-1383[/url]
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com (N202JH(at)gmail.com)
(954) 240-1383
Sent from my iPad
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D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
nder-List"">http://www.matronics.com/Navigator?Commander-List
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ot;">http://www.matronics.com/contribution
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n202jh(at)GMAIL.COM
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| Posted: Wed Oct 14, 2015 6:24 pm Post subject: Commander 500S oil pressure |
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Hi Bill nice to speak to you again,
The temps are close to even on both...the low pressure side may be a bit higher but I believe that is a result of the low oil pressure situation. Low oil pressure can bring high temps too I believe.
In cruise, all temps and pressures match each other rather close.
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com (N202JH(at)gmail.com)
(954) 240-1383
Sent from my iPad
On Oct 14, 2015, at 9:04 PM, BillLeff1 <BillLeff1(at)aol.com (BillLeff1(at)aol.com)> wrote:
| Quote: | What is the oil temp when the pressure is low. How does it compare to the other engine. Also, is the CHT high on that engine? Any metal in the screen or filter?
Bill Leff
Sent from my Verizon Wireless 4G LTE DROID
On Oct 14, 2015 8:36 PM, N202JH <n202jh(at)GMAIL.COM (n202jh(at)GMAIL.COM)> wrote: | Quote: |
Good Evening,
My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
Dgroves484(at)gmail.com (Dgroves484(at)gmail.com)
(954) 240-1383
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com (N202JH(at)gmail.com)
(954) 240-1383
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com (N202JH(at)gmail.com)
(954) 240-1383
Sent from my iPad | Quote: |
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| Quote: | http://www.matronics.com/Navigator?Commander-List
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cs.com
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matronics.com/contribution
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[quote][b]
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glennh(at)gmail.com
Guest
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| Posted: Thu Oct 15, 2015 2:57 am Post subject: Commander 500S oil pressure |
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Derek,
Everyone has begun to move off this last and over to Twin commander group.com
Come join us over there and repost your question in the engines section.Â
Thanks
Glenn
On Wednesday, October 14, 2015, N202JH <n202jh(at)gmail.com (n202jh(at)gmail.com)> wrote:
| Quote: |
Good Evening,
   My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
[url=javascript:_e(%7B%7D,'cvml','Dgroves484(at)gmail.com');]Dgroves484(at)gmail.com[/url]
[url=tel:(954)%20240-1383](954) 240-1383[/url]
Derek Groves
Midas Air Corp
Groves Aviation Inc.
[url=javascript:_e(%7B%7D,'cvml','N202JH(at)gmail.com');]N202JH(at)gmail.com[/url]
(954) 240-1383
Sent from my iPad
| Quote: |
" target="_blank">http://www.matronics.com/Navigator?Commander-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
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--
--glenn hancock
You can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
[quote][b]
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aero560e(at)gmail.com
Guest
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| Posted: Thu Oct 15, 2015 3:43 am Post subject: Commander 500S oil pressure |
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This one has migrated...
On Thu, Oct 15, 2015 at 8:26 PM, Glenn Hancock <glennh(at)gmail.com (glennh(at)gmail.com)> wrote:
[quote]Derek,
Everyone has begun to move off this last and over to Twin commander group.com
Come join us over there and repost your question in the engines section.Â
Thanks
Glenn
On Wednesday, October 14, 2015, N202JH <n202jh(at)gmail.com (n202jh(at)gmail.com)> wrote:
| Quote: |
Good Evening,
   My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
Dgroves484(at)gmail.com
[url=tel:(954)%20240-1383](954) 240-1383[/url]
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com
[url=tel:%28954%29%20240-1383](954) 240-1383[/url]
Sent from my iPad
|
--
--glenn hancock
You can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
| Quote: |
" target="_blank">http://www.matronics.com/Navigator?Commander-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
[b]
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Commander-List |
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tylorhall(at)mac.com
Guest
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| Posted: Thu Oct 15, 2015 5:46 am Post subject: Commander 500S oil pressure |
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Hay guys, the link to Group.com goes to publishing company for bible learning. Interesting, but nothing about Aero Commanders.Where is the new web page?
twincommander.org is the old web site for TCFG. No link there.
????
Tylor Hall
tylorhall(at)mac.com (tylorhall(at)mac.com)
First Fueling Systems, Inc.
401 Monte Alto PL NE
Albuquerque, NM 87123
505-400-8373 Cell
505-247-3001
www.firstfueling.com
| Quote: | On Oct 15, 2015, at 5:42 AM, Russell Legg <aero560e(at)gmail.com (aero560e(at)gmail.com)> wrote:
This one has migrated...
On Thu, Oct 15, 2015 at 8:26 PM, Glenn Hancock <glennh(at)gmail.com (glennh(at)gmail.com)> wrote: | Quote: | Derek,
Everyone has begun to move off this last and over to Twin commander group.com
Come join us over there and repost your question in the engines section.
Thanks
GlennOn Wednesday, October 14, 2015, N202JH <n202jh(at)gmail.com (n202jh(at)gmail.com)> wrote: | Quote: |
Good Evening,
My boss has a Commander 500S.Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.However, the right engine does something strange between cold and hot engine core temperatures.First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.Right engine oil press comes down as expected after the engine warms.We take off and in cruise, both pressures are matched +/- 1 PSI.After landing, the right engine oil pressure is very low, below bottom redline.If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.No change to the oil pressure behavior I listed above,Any ideas?Regards,Derek GrovesMidas Air CorpGroves Aviation Inc.[url=tel:(954)%20240-1383](954) 240-1383[/url]Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com
[url=tel:%28954%29%20240-1383](954) 240-1383[/url]
Sent from my iPad
|
-- --glenn hancockYou can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
|
| Quote: |
href="http://www.matronics.com/Navigator?Commander-List" class="">http://www.matronics.com/Navigator?Commander-List
class="">http://forums.matronics.com
class="">http://www.matronics.com/contribution
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[quote][b]
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Commander-List |
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glennh(at)GMAIL.COM
Guest
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| Posted: Thu Oct 15, 2015 9:20 am Post subject: Commander 500S oil pressure |
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Twin commander group.com
On Thursday, October 15, 2015, Tylor Hall <tylorhall(at)mac.com (tylorhall(at)mac.com)> wrote:
| Quote: | Hay guys,  the link to Group.com goes to publishing company for bible learning. Interesting, but nothing about Aero Commanders.Where is the new web page?
twincommander.org is the old web site for TCFG. No link there.
????
Tylor Hall
[url=javascript:_e(%7B%7D,'cvml','tylorhall(at)mac.com');]tylorhall(at)mac.com[/url]
First Fueling Systems, Inc.
401 Monte Alto PL NE
Albuquerque, NM 87123
505-400-8373 Cell
505-247-3001
www.firstfueling.com
| Quote: | On Oct 15, 2015, at 5:42 AM, Russell Legg <[url=javascript:_e(%7B%7D,'cvml','aero560e(at)gmail.com');]aero560e(at)gmail.com[/url]> wrote:
This one has migrated...
On Thu, Oct 15, 2015 at 8:26 PM, Glenn Hancock <[url=javascript:_e(%7B%7D,'cvml','glennh(at)gmail.com');]glennh(at)gmail.com[/url]> wrote:
| Quote: | Derek,
Everyone has begun to move off this last and over to Twin commander group.com
Come join us over there and repost your question in the engines section.Â
Thanks
Glenn
On Wednesday, October 14, 2015, N202JH <[url=javascript:_e(%7B%7D,'cvml','n202jh(at)gmail.com');]n202jh(at)gmail.com[/url]> wrote:
| Quote: |
Good Evening,
   My boss has a Commander 500S.
Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.
However, the right engine does something strange between cold and hot engine core temperatures.
First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.
Right engine oil press comes down as expected after the engine warms.
We take off and in cruise, both pressures are matched +/- 1 PSI.
After landing, the right engine oil pressure is very low, below bottom redline.
If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.
My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.
No change to the oil pressure behavior I listed above,
Any ideas?
Regards,
Derek Groves
Midas Air Corp
Groves Aviation Inc.
Dgroves484(at)gmail.com
[url=tel:(954)%20240-1383](954) 240-1383[/url]
Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com
[url=tel:%28954%29%20240-1383](954) 240-1383[/url]
Sent from my iPad
|
--
--glenn hancock
You can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
href="http://www.matronics.com/Navigator?Commander-List" class="">http://www.matronics.com/Navigator?Commander-List
class="">http://forums.matronics.com
class="">http://www.matronics.com/contribution
|
" target="_blank">http://www.matronics.com/Navigator?Commander-List
tp://forums.matronics.com
_blank">http://www.matronics.com/contribution
|
|
--
--glenn hancock
You can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
[quote][b]
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?Commander-List |
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John Vormbaum
Joined: 21 Aug 2006
Posts: 273
Location: SF Bay Area, CA
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| Posted: Thu Oct 15, 2015 9:37 am Post subject: Commander 500S oil pressure |
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twincommandergroup.com
| Quote: | On Oct 15, 2015, at 10:20 AM, Glenn Hancock <glennh(at)GMAIL.COM (glennh(at)GMAIL.COM)> wrote:
Twin commander tylorhall(at)mac.com (tylorhall(at)mac.com)> wrote: | Quote: | Hay guys, the link to Group.com goes to publishing company for bible learning. Interesting, but nothing about Aero Commanders.Where is the new web page?
twincommander.org is the old web site for TCFG. No link there.
????
Tylor Hall
[url=javascript:_e(%7B%7D,\'cvml\',\'tylorhall(at)mac.com\');]tylorhall(at)mac.com[/url]
First Fueling Systems, Inc.
401 Monte Alto PL NE
Albuquerque, NM 87123
505-400-8373 Cell
505-247-3001
www.firstfueling.com
| Quote: | On Oct 15, 2015, at 5:42 AM, Russell Legg <[url=javascript:_e(%7B%7D,\'cvml\',\'aero560e(at)gmail.com\');]aero560e(at)gmail.com[/url]> wrote:
This one has migrated...
On Thu, Oct 15, 2015 at 8:26 PM, Glenn Hancock <[url=javascript:_e(%7B%7D,\'cvml\',\'glennh(at)gmail.com\');]glennh(at)gmail.com[/url]> wrote: | Quote: | Derek,
Everyone has begun to move off this last and over to Twin commander group.com
Come join us over there and repost your question in the engines section.
Thanks
GlennOn Wednesday, October 14, 2015, N202JH <[url=javascript:_e(%7B%7D,\'cvml\',\'n202jh(at)gmail.com\');]n202jh(at)gmail.com[/url]> wrote: | Quote: |
Good Evening,
My boss has a Commander 500S.Right engine runs perfect oil pressure in flight. It matches the left engine within one PSI.However, the right engine does something strange between cold and hot engine core temperatures.First start of the day, cold engine, you get an initial high oil pressure as expected with cold oil. But it is very high, over 90 PSI. The left engine is only around high 80s.Right engine oil press comes down as expected after the engine warms.We take off and in cruise, both pressures are matched +/- 1 PSI.After landing, the right engine oil pressure is very low, below bottom redline.If I were to do a feather check at this point, the prop recovery time is very long confirming low oil pressure.My mechanic replaced the ball and spring for the "oil pressure maintaining valve", if that term is correct, and honed out a fresh seat for the ball.No change to the oil pressure behavior I listed above,Any ideas?Regards,Derek GrovesMidas Air CorpGroves Aviation Inc.[url=tel:(954)%20240-1383](954) 240-1383[/url]Derek Groves
Midas Air Corp
Groves Aviation Inc.
N202JH(at)gmail.com
[url=tel:%28954%29%20240-1383](954) 240-1383[/url]
Sent from my iPad
|
-- --glenn hancockYou can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
|
|
|
-- --glenn hancockYou can't win an argument with an ignorant person. They'll just drag you down to their level and beat you with experience.
| Quote: |
href="http://www.matronics.com/Navigator?Commander-List" class="">http://www.matronics.com/Navigator?Commander-List
class="">http://forums.matronics.com
class="">http://www.matronics.com/contribution
|
|
[quote][b]
| | - The Matronics Commander-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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